.father {
    width: 1100px;
    height: 500px;
    background-color: white;
    position: relative;
    top: 150px;
    left: 100px;
}

body {
    background-color: darkgray;
}

.yi {
    width: 350px;
    height: 250px;
    background-color: pink;
    position: absolute;
    bottom: -50px;
    left: 200px;
    z-index: 3;
    text-align: left;
}

.er {
    width: 350px;
    height: 350px;
    background-color: silver;
    position: absolute;
    left: 70px;
    top: 80px;
    z-index: 1;
}

.san {
    width: 430px;
    height: 590px;
    background-color: black;
    position: absolute;
    left: 400px;
    top: -100px;
    color: white;
}

h4 {
    color: violet;
    position: absolute;
    left: 30px;
    top: 20px;
}

.a {
    position: absolute;
    left: 30px;
    top: 70px;
}

h3 {
    position: absolute;
    bottom: 50px;
    left: 40px;
}

.xy {
    width: 165px;
    height: 50px;
    border: 5px solid white;
    margin-top: 140px;
    margin-left: 30px;
}

a:hover {
    text-decoration: underline;
    letter-spacing: 2px;
    font-size: 20px;
    background-color: yellow;
}

a:active {
    color: deepskyblue;
}

.e {
    position: absolute;
    left: 50px;
    top: 100px;
}

.z {
    position: absolute;
    top: 180px;
    left: 50px;
    【。0
}

h2 {
    position: absolute;
    bottom: 200px;
    left: 50px;
    background-color: white;
    color: cyan;
}